-54.95% is the change from 868 to 391
Calculation steps:
[( 391 - 868 ) ÷ 868] x 100 = -54.95%
Formula
Percentage change = [(391 - 868) / 868] x 100
Subtract the new number by the original number
391 - 868 = -477
-477 ÷ 868 = -0.5495391705069125
-0.5495391705069125 x 100 = -54.95%